diff options
Diffstat (limited to 'lib/dma-debug.c')
| -rw-r--r-- | lib/dma-debug.c | 53 |
1 files changed, 1 insertions, 52 deletions
diff --git a/lib/dma-debug.c b/lib/dma-debug.c index d3da7edc034f..69da09a085a1 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c | |||
| @@ -400,60 +400,9 @@ out_err: | |||
| 400 | return -ENOMEM; | 400 | return -ENOMEM; |
| 401 | } | 401 | } |
| 402 | 402 | ||
| 403 | static int device_dma_allocations(struct device *dev) | ||
| 404 | { | ||
| 405 | struct dma_debug_entry *entry; | ||
| 406 | unsigned long flags; | ||
| 407 | int count = 0, i; | ||
| 408 | |||
| 409 | for (i = 0; i < HASH_SIZE; ++i) { | ||
| 410 | spin_lock_irqsave(&dma_entry_hash[i].lock, flags); | ||
| 411 | list_for_each_entry(entry, &dma_entry_hash[i].list, list) { | ||
| 412 | if (entry->dev == dev) | ||
| 413 | count += 1; | ||
| 414 | } | ||
| 415 | spin_unlock_irqrestore(&dma_entry_hash[i].lock, flags); | ||
| 416 | } | ||
| 417 | |||
| 418 | return count; | ||
| 419 | } | ||
| 420 | |||
| 421 | static int dma_debug_device_change(struct notifier_block *nb, | ||
| 422 | unsigned long action, void *data) | ||
| 423 | { | ||
| 424 | struct device *dev = data; | ||
| 425 | int count; | ||
| 426 | |||
| 427 | |||
| 428 | switch (action) { | ||
| 429 | case BUS_NOTIFY_UNBIND_DRIVER: | ||
| 430 | count = device_dma_allocations(dev); | ||
| 431 | if (count == 0) | ||
| 432 | break; | ||
| 433 | err_printk(dev, NULL, "DMA-API: device driver has pending " | ||
| 434 | "DMA allocations while released from device " | ||
| 435 | "[count=%d]\n", count); | ||
| 436 | break; | ||
| 437 | default: | ||
| 438 | break; | ||
| 439 | } | ||
| 440 | |||
| 441 | return 0; | ||
| 442 | } | ||
| 443 | |||
| 444 | void dma_debug_add_bus(struct bus_type *bus) | 403 | void dma_debug_add_bus(struct bus_type *bus) |
| 445 | { | 404 | { |
| 446 | struct notifier_block *nb; | 405 | /* FIXME: register notifier */ |
| 447 | |||
| 448 | nb = kzalloc(sizeof(struct notifier_block), GFP_KERNEL); | ||
| 449 | if (nb == NULL) { | ||
| 450 | printk(KERN_ERR "dma_debug_add_bus: out of memory\n"); | ||
| 451 | return; | ||
| 452 | } | ||
| 453 | |||
| 454 | nb->notifier_call = dma_debug_device_change; | ||
| 455 | |||
| 456 | bus_register_notifier(bus, nb); | ||
| 457 | } | 406 | } |
| 458 | 407 | ||
| 459 | /* | 408 | /* |
